Homes with ADU · Texas

Buying a home with an ADU in Texas

Texas has no statewide ADU enabling law, so ADUs (locally called 'casitas' or 'garage apartments') are uncommon outside Austin and a few inner-loop Houston neighborhoods. Where they do exist, they sell at a 12–20% premium over the equivalent single-unit lot. The market is small enough that ADU comps may be hard to find — appraisers often treat them as bonus space rather than income-producing units.

Texas state-level rules buyers should know

• Texas has no statewide ADU enabling law — rules vary entirely by municipality.
• Austin allows 'casitas' and garage apartments in most single-family zones (since 2015).
• Houston's lack of formal zoning makes ADU-like structures possible in many older neighborhoods.
• Dallas restricts ADUs more tightly; most older 'garage apartments' are grandfathered.
• Owner-occupancy is sometimes required at the local level for new ADUs.

What to check when buying

✓ Verify which municipal authority permitted the unit — Texas's lack of zoning consistency means rules vary block by block.
✓ For Austin properties: check the Austin Development Services Department for the permit; verify it was approved as a true ADU and not a 'storage' or 'workshop' classification.
✓ For Houston: ascertain whether the unit has a Certificate of Occupancy as a separate dwelling, not just a 'second structure' record.
✓ Check whether deed restrictions allow rental — common in Texas master-planned communities.

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Buying a home with an ADU in Texas

Texas state-level rules buyers should know

• Texas has no statewide ADU enabling law — rules vary entirely by municipality.

• Austin allows 'casitas' and garage apartments in most single-family zones (since 2015).

• Houston's lack of formal zoning makes ADU-like structures possible in many older neighborhoods.

• Dallas restricts ADUs more tightly; most older 'garage apartments' are grandfathered.

• Owner-occupancy is sometimes required at the local level for new ADUs.

What to check when buying

✓ Verify which municipal authority permitted the unit — Texas's lack of zoning consistency means rules vary block by block.

✓ For Austin properties: check the Austin Development Services Department for the permit; verify it was approved as a true ADU and not a 'storage' or 'workshop' classification.

✓ For Houston: ascertain whether the unit has a Certificate of Occupancy as a separate dwelling, not just a 'second structure' record.

✓ Check whether deed restrictions allow rental — common in Texas master-planned communities.

Buying a home with an ADU in Texas

Texas state-level rules buyers should know

What to check when buying

Related

Buying a home with an ADU in Texas

Texas state-level rules buyers should know

What to check when buying

Related